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various fixes for naked_asm! implementation

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- fix for divergence
- fix error message
- fix another cranelift test
- fix some cranelift things
- don't set the NORETURN option for naked asm
- fix use of naked_asm! in doc comment
- fix use of naked_asm! in run-make test
- use `span_bug` in unreachable branch
This commit is contained in:
Folkert de Vries
2024-09-05 19:45:40 +02:00
parent 10fa482906
commit 5fc60d1e52
29 changed files with 116 additions and 73 deletions
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30
compiler/rustc_passes/src/naked_functions.rs
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@@ -7,10 +7,11 @@ use rustc_hir::intravisit::Visitor;
use rustc_hir::{ExprKind, HirIdSet, StmtKind};
use rustc_middle::hir::nested_filter::OnlyBodies;
use rustc_middle::query::Providers;
use rustc_middle::span_bug;
use rustc_middle::ty::TyCtxt;
use rustc_session::lint::builtin::UNDEFINED_NAKED_FUNCTION_ABI;
use rustc_span::Span;
use rustc_span::symbol::sym;
use rustc_span::{BytePos, Span};
use rustc_target::spec::abi::Abi;
use crate::errors::{
@@ -137,10 +138,7 @@ fn check_asm<'tcx>(tcx: TyCtxt<'tcx>, def_id: LocalDefId, body: &'tcx hir::Body<
ItemKind::InlineAsm => {
has_err = true;
// the span that contains the `asm!` call,
// so tooling can replace it with `naked_asm!`
let macro_span = span.with_hi(span.lo() + BytePos("asm!".len() as u32));
tcx.dcx().emit_err(NakedFunctionsMustNakedAsm { span, macro_span });
tcx.dcx().emit_err(NakedFunctionsMustNakedAsm { span });
}
ItemKind::NonAsm => {
must_show_error = true;
@@ -210,19 +208,17 @@ impl CheckInlineAssembly {
self.items.push((ItemKind::NonAsm, span));
}
ExprKind::InlineAsm(asm) => {
match asm.asm_macro {
rustc_ast::AsmMacro::Asm => {
self.items.push((ItemKind::InlineAsm, span));
}
rustc_ast::AsmMacro::NakedAsm => {
self.items.push((ItemKind::NakedAsm, span));
}
rustc_ast::AsmMacro::GlobalAsm => {
// not allowed in this position
}
ExprKind::InlineAsm(asm) => match asm.asm_macro {
rustc_ast::AsmMacro::Asm => {
self.items.push((ItemKind::InlineAsm, span));
}
}
rustc_ast::AsmMacro::NakedAsm => {
self.items.push((ItemKind::NakedAsm, span));
}
rustc_ast::AsmMacro::GlobalAsm => {
span_bug!(span, "`global_asm!` is not allowed in this position")
}
},
ExprKind::DropTemps(..) | ExprKind::Block(..) => {
hir::intravisit::walk_expr(self, expr);